Battery, battery pack, and uninterruptible power supply

Patent metadata

Field	Value
Publication number	US-10522869-B2
Application number	US-201615556277-A
Country	US
Kind code	B2
Filing date	Mar 4, 2016
Priority date	Mar 6, 2015
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

The present invention provides a battery, including a cathode, a anode, and an electrolyte solution. The cathode includes a cathode active substance and a cathode current collector. The electrolyte solution includes first metal ions and second metal ions. In a charging/discharging process, the first metal ions can be reversibly deintercalated-intercalated at the cathode, the second metal ions can be reduced and deposited as a second metal at the anode, and the second metal can be oxidized and dissolved back to the second metal ions. The anode includes a anode active substance and a anode current collector. A lead-containing substance is provided on a surface of the anode active substance and/or in the electrolyte solution. A mass ratio of lead in the lead-containing substance to the battery is not greater than 1000 ppm. The present invention can effectively improve a dendrite problem at a anode of a battery, prolong the cycle life of the battery, and improve the electrochemical performance and safety performance of the battery.

First claim

What is claimed is:

1. A battery, comprising a cathode, a anode, and an electrolyte solution, wherein the cathode comprises a cathode active substance and a cathode current collector;
the electrolyte solution comprises first metal ions and second metal ions;
in a charging/discharging process, the first metal ions are reversibly deintercalated-intercalated at the cathode, the second metal ions are reduced and deposited as a second metal at the anode, and the second metal is oxidized and dissolved back to the second metal ions;
the anode comprises a anode active substance and a anode current collector;
a composite cathode material, wherein the composite cathode material includes a cathode active substance and a coating layer, the cathode active substance includes a lithium ion intercalation/deintercalation compound, and the coating layer is at least one of metallic lead, lead monoxide, or lead tetroxide, wherein the cathode active substance comprises a modified lithium manganese oxide material, and the modified lithium manganese oxide material meets a general formula Li 1+x Mn y M z O k , wherein M is selected from Pb, −1≤x≤0.5, 1≤y≤2.5, 0<z≤0.1, and 3≤k≤6, and
wherein from a mass percentage of lead in the metallic lead and/or the lead oxide in the cathode active substance is in the range of 0.001%-10%.

2. The battery according to claim 1 , wherein a surface of the cathode active substance is provided with a coating layer, and the coating layer is metallic lead and/or lead oxide.

3. The battery according to claim 1 , wherein the battery comprises an additive of a bismuth compound, and the bismuth compound is added to the anode and/or the electrolyte solution.

4. The battery according to claim 1 , wherein the anode active substance comprises zinc, and the anode current collector comprises brass foil.

5. The battery according to claim 1 , wherein the cathode current collector comprises a nylon mesh carrier and graphite foil that is coated on the nylon mesh carrier.

6. The battery according to claim 1 , wherein the first metal ions comprise lithium ions, sodium ions, or magnesium ions, and the second metal ions comprise zinc ions.

7. The battery according to claim 1 , wherein a lead-containing substance is provided on a surface of the anode active substance and/or in the electrolyte solution; and a mass ratio of lead in the lead-containing substance to the battery is not greater than 1000 ppm.

8. The battery according to claim 7 , wherein the lead-containing substance on the surface of the anode active substance comprises a lead metal.

9. The battery according to 7, wherein the lead-containing substance in the electrolyte solution comprises lead ions.

10. The battery according to claim 7 , wherein a mass ratio of lead in the lead-containing substance in the electrolyte solution to the electrolyte solution is not less than 10 ppm.

11. The battery according to claim 7 , wherein the lead-containing substance comprises at least one of metallic lead, lead sulfate, or lead oxide.

12. A battery pack, comprising several batteries according claim 1 .

Assignees

• Positec Power Tools Suzhou Co Ltd
• Chen Pu

Inventors

• Chen Pu
• Doan The Nam Long
• Luo Xiaosong

Classifications

• H01M10/20

  Semi-lead accumulators, i.e. accumulators in which only one electrode contains lead · CPC title

• H01M4/42

  Alloys based on zinc · CPC title

• H01M4/38

  of elements or alloys · CPC title

• H01M10/36

  Accumulators not provided for in groups H01M10/05-H01M10/34 · CPC title

• H01M4/505

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title